JPH10315158A - Manually holding tool device - Google Patents
Manually holding tool deviceInfo
- Publication number
- JPH10315158A JPH10315158A JP10111611A JP11161198A JPH10315158A JP H10315158 A JPH10315158 A JP H10315158A JP 10111611 A JP10111611 A JP 10111611A JP 11161198 A JP11161198 A JP 11161198A JP H10315158 A JPH10315158 A JP H10315158A
- Authority
- JP
- Japan
- Prior art keywords
- hand
- tool device
- held tool
- leakage
- protective
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal fluid pressure, liquid level or liquid displacement, e.g. Buchholz relays
- H02H5/083—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal fluid pressure, liquid level or liquid displacement, e.g. Buchholz relays responsive to the entry or leakage of a liquid into an electrical appliance
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Auxiliary Devices For Machine Tools (AREA)
- Emergency Protection Circuit Devices (AREA)
- Portable Power Tools In General (AREA)
- Machine Tool Units (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、特に、水がグリッ
プに流入したとき、又は例えば、導電性の堆積物等を介
して装置ハウジングが電源電圧に導通するとき操作者を
保護する保護装置を有する手持ち工具装置に関する。BACKGROUND OF THE INVENTION The present invention relates to a protective device for protecting an operator, especially when water flows into a grip or when, for example, the device housing conducts to the supply voltage via conductive deposits or the like. A hand-held tool device having the same.
【０００２】[0002]
【従来の技術】ドイツ国特許第９５０６５８号には絶縁
材料で構成した部分により装置ハウジングの金属部分を
電動モータから絶縁した手持ち工具装置の保護装置が記
載されており、装置ハウジングの内部の汚れに最もさら
される個所に剥き出しの電極を配置する。これらの電極
はアースに接続するか、又は配電網の零点位置に接続
し、漏洩電流を逃がすようにしている。しかし、このよ
うな安全装置は、電極に接続した零点導線又はアース導
線が断線していると機能しない。また装置ハウジングの
内部に水が流入すると、長い範囲にわたる「水漏電」に
基づいて漏洩電流の無視できないほど大きな部分が操作
者を経てアースに流れ、軽度の感電又はひどい場合には
感電事故を招くことになる。2. Description of the Related Art German Patent No. 950,658 describes a protection device for a hand-held power tool in which a metal part of a device housing is insulated from an electric motor by a portion made of an insulating material, and is designed to prevent contamination inside the device housing. A bare electrode is placed where it is most exposed. These electrodes are connected to ground or at the zero point of the distribution network to allow leakage current to escape. However, such a safety device does not work if the zero conductor or the ground conductor connected to the electrode is broken. Also, if water flows into the inside of the device housing, a non-negligible part of the leakage current flows to the ground via the operator based on the "water leakage" over a long range, causing a slight electric shock or an electric shock accident in severe cases. Will be.
【０００３】更に、ドイツ国特許出願第１１０５９７７
号には、配電網に普通に配置した過電流保護装置が反応
するよう汚れが付いた絶縁材料装着部分を経て２個の剥
き出しの電極により短絡電流を導くようにした漏電保護
装置が記載されている。この漏電保護装置は保護導線と
は無関係に機能する。更に、保護ハウジングの内部のこ
のような位置に配置した漏電保護装置は、手持ち工具装
置の動作によって汚れが付き易く、使用者は流入した水
又は他の汚れからは効果的に保護されず、通常のように
配電網に配置した従来の過電流保護スイッチでは１６Ａ
の電流で感電することがある。Further, German Patent Application No. 1105977
No. 3 describes an earth leakage protection device in which an overcurrent protection device normally arranged in a power distribution network reacts with a short-circuit current through two exposed electrodes through a stained insulating material mounting portion so as to react. I have. This leakage protection device functions independently of the protective conductor. In addition, the leakage protection device located at such a position inside the protection housing is liable to be soiled by the operation of the hand-held tool device, and the user is not effectively protected from inflowing water or other dirt, and is usually The conventional overcurrent protection switch placed in the distribution network as in
You may be electrocuted by the current.
【０００４】[0004]
【発明が解決しようとする課題】従って、本発明の目的
は、操作者を確実にかつ効果的に感電事故から保護する
ことができる保護装置を設けた手持ち工具装置を得るに
ある。SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a hand-held tool device provided with a protection device capable of reliably and effectively protecting an operator from an electric shock accident.
【０００５】[0005]
【課題を解決するための手段】この目的を達成するた
め、本発明は、装置ハウジングの内部に配置した保護電
極を有する手持ち工具において、漏電保護スイッチが所
定漏洩電流で動作して手持ち工具の電源導線を遮断し、
保護導線が遮断されないようにしたことを特徴とする。In order to achieve this object, the present invention relates to a hand-held tool having a protective electrode disposed inside an apparatus housing, wherein a leakage protection switch is operated at a predetermined leakage current to supply power to the hand-held tool. Cut off the conductor,
The protection conductor is not interrupted.
【０００６】本発明の好適な実施例においては、漏電保
護スイッチは漏洩電流が最大１０ｍＡになるとき動作す
るようにする。In a preferred embodiment of the invention, the leakage protection switch is activated when the leakage current is up to 10 mA.
【０００７】更に、本発明の他の好適な実施例において
は、保護電極をアースに接続する。本発明の更に他の好
適な実施例においては、漏電保護スイッチは、アースに
流れる電流に基づいて漏洩電流を決定するものとする。
この漏電保護スイッチは手持ち工具装置の電源導線にお
ける電流差を検出する総電流変成器に基づいて漏洩電流
を決定するものとすると好適である。更に、保護電極を
グリップに配置し、グリップを開くか、又はグリップキ
ャップを外すことによっても元々の位置に留まるよう構
成すると好適である。更に、保護電極を分岐させ、この
分岐によって保護電極を保持するようにすると好適であ
る。更に、保護電極を多数の部分により構成すると好適
である。また保護電極を、好ましくは手持ち工具装置の
作業姿勢で湿気が容易に溜まりやすい深い位置に配置す
る。また保護電極を、装置ハウジングの開口の領域に配
置するとよい。また保護電極を、導電性媒体が溜まる装
置ハウジングの内部の位置に配置すると好適である。他
の好適な実施例においては、保護電極を、手持ち工具装
置のすべての作業位置で動作するようにする。更に、好
適な実施例においては、保護電極に、溝、リブ又はバリ
ヤのうちの少なくとも一つを設ける。更に、他の好適な
実施例においては、保護電極の側面を最大の大きさとす
る。保護電極は耐食性材料により構成すると好適であ
る。Further, in another preferred embodiment of the present invention, the protective electrode is connected to ground. In still another preferred embodiment of the present invention, the leakage protection switch determines the leakage current based on the current flowing to the ground.
Advantageously, the leakage protection switch determines the leakage current based on a total current transformer that detects a current difference in the power lead of the hand-held power tool. Further, it is preferable that the protective electrode is arranged on the grip and the grip is opened or the grip cap is removed so that the protective electrode remains at the original position. Further, it is preferable that the protective electrode is branched, and the protective electrode is held by the branch. Further, it is preferable that the protection electrode is constituted by a large number of parts. Further, the protection electrode is preferably arranged at a deep position where moisture easily accumulates in the working posture of the hand-held tool device. The protective electrode may be arranged in the region of the opening of the device housing. It is preferable that the protective electrode is arranged at a position inside the device housing where the conductive medium is stored. In another preferred embodiment, the protective electrode is operated in all working positions of the hand-held power tool. Further, in a preferred embodiment, the protection electrode is provided with at least one of a groove, a rib or a barrier. Further, in another preferred embodiment, the side surface of the protection electrode is maximized. Preferably, the protective electrode is made of a corrosion resistant material.
【０００８】本発明によれば、保護導線が断線していな
い場合のみならず、保護導線が断線していても操作者を
保護することができる。保護導線が断線していない場
合、漏洩電流は保護導線を経て流れ、操作者は感電しな
い。既に高い漏電レベルで遮断を生じている場合、漏洩
電流の存在によって装置は損傷から最適に保護される。
保護導線が断線している場合、漏電保護スイッチにより
配電電流の遮断を生ずる所定漏洩電流を超過する分の所
定の最大許容漏洩電流が操作者を経てアースに流れるだ
けとなる。According to the present invention, the operator can be protected not only when the protective conductor is not broken but also when the protective conductor is broken. If the protective conductor is not broken, the leakage current will flow through the protective conductor and the operator will not be shocked. If the interruption is already occurring at a high leakage level, the presence of the leakage current protects the device optimally from damage.
If the protective conductor is broken, only a predetermined maximum allowable leakage current exceeding the predetermined leakage current which causes the distribution current to be interrupted by the leakage protection switch flows to the ground via the operator.
【０００９】好適な実施例において漏電保護スイッチが
動作する値の１０ｍＡよりも小さい漏洩電流は危険では
ない程度と見なされ、単に外部に好ましくない作用を引
き起こすだけである。１０ｍＡよりも高い漏電保護スイ
ッチの所定電流の漏電が発生した場合、２００ミリ秒以
内で遮断される。この動作範囲は１０ｍＡ以下に設定す
ることもできる。しかし、低く設定した場合は誤動作を
生ずることがある。[0009] Leakage currents of less than 10 mA, the value at which the leakage protection switch operates in the preferred embodiment, are considered non-hazardous and merely cause undesirable external effects. If a leakage of a predetermined current of the leakage protection switch higher than 10 mA occurs, it is shut off within 200 milliseconds. This operation range can be set to 10 mA or less. However, if set low, malfunction may occur.
【００１０】本発明の好適な実施例において、保護電極
を個別保護電極の部分によって構成し、これらの個別保
護電極を装置全体にわたって分布させることにより、電
圧は「水路」又は導電性の汚れ被膜を経て伝播する。装
置ハウジングを合成材料で構成した実施例でも、操作者
が触れる可能性のある合成材料の外面に形成した通気ス
リット又は開口形成部を経て電圧が伝播するとき、結局
操作者への電圧伝播は起こりうる。特に好適な実施例に
おいては、装置ハウジングの開口領域に保護電極を配置
する。In a preferred embodiment of the present invention, the voltage is applied to a "waterway" or conductive dirt coating by forming the protective electrodes by portions of the individual protective electrodes and distributing these individual protective electrodes throughout the device. Propagating through Even in the embodiment in which the device housing is made of a synthetic material, when the voltage propagates through the ventilation slit or the opening forming portion formed on the outer surface of the synthetic material to which the operator can touch, the voltage propagation to the operator eventually occurs. sell. In a particularly preferred embodiment, a protective electrode is arranged in the open area of the device housing.
【００１１】[0011]
【発明の実施の形態】次に、図面につき本発明の好適な
実施の形態を説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment of the present invention will be described with reference to the drawings.
【００１２】図１には、頭上の構造物に穿孔を形成する
のに使用する手持ち穿孔装置を示す。この穿孔装置は一
連の通気スリットＡ及び一連の通気スリットＢ、並びに
開口形成部Ｃを設ける。この装置は、例えば、水冷式の
穿孔装置に関連し、貯水装置８が正常に機能しなかった
り、、又は洗浄ヘッド７を密にしないで動作した場合、
穿孔装置全体に水が流れ、通気スリットＡ又はＢ若しく
は開口形成部Ｃまでの水路を経て電圧が操作者に漏電す
る。このような漏電現象は、他の手持ち作業工具には発
生し、水冷式以外の工具でも、水に接触するとき又は導
電性の汚れの被膜が溜まったときには発生する。FIG. 1 shows a hand-held piercing device used to make a piercing in an overhead structure. This perforation device is provided with a series of ventilation slits A and a series of ventilation slits B, and an opening forming part C. This device is, for example, associated with a water-cooled perforation device, when the water storage device 8 does not function properly or operates without the cleaning head 7 being dense.
Water flows through the entire perforation device, and the voltage leaks to the operator via the water passage to the ventilation slits A or B or the opening forming portion C. Such an electric leakage phenomenon occurs in other hand-held power tools, and also occurs in tools other than the water-cooled type when they come into contact with water or when a film of conductive dirt accumulates.
【００１３】図２は、図１に示す穿孔装置が、個別保護
電極１ａ，１ｂ，１ｃからなる３つの部分を有する保護
電極１と、総電流変成器２ａ、判定電子回路２ｂ及び遮
断スイッチ２ｃからなる漏電保護スイッチ２とを設けた
状態を線図的に示す。図示の実施例では、通気スリット
Ａの下方に電極１ａを配置し、通気スリットＢの下方に
電極１ｂを配置し、開口形成部Ｃの下方に電極１ｃを配
置する。個別保護電極１ａ〜１ｃは互いに、また保護導
線３に接続する。図示の実施例において、例えば３種類
の漏洩電流ＩΔ1 ，ＩΔ2 ，ＩΔ3 を示し、電源導線
４，５のうち図示の実施例では、これらの漏洩電流は、
電源導線線５から例えば、水路によって構成される抵抗
ＲＷ１，ＲＷ２，ＲＷ３並びに保護電極１の個別保護電
極１ａ〜１ｃを経て保護導線３に流れる。FIG. 2 shows that the drilling device shown in FIG. 1 is composed of a protective electrode 1 having three parts consisting of individual protective electrodes 1a, 1b and 1c, a total current transformer 2a, a decision electronic circuit 2b and a cut-off switch 2c. FIG. 2 schematically shows a state in which the electric leakage protection switch 2 is provided. In the illustrated embodiment, the electrode 1a is arranged below the ventilation slit A, the electrode 1b is arranged below the ventilation slit B, and the electrode 1c is arranged below the opening forming portion C. The individual protection electrodes 1 a to 1 c are connected to one another and to the protection conductor 3. In the illustrated embodiment, for example, three types of leakage currents IΔ 1 , IΔ 2 , and IΔ 3 are shown. In the illustrated embodiment of the power supply wires 4 and 5, these leakage currents are:
For example, the current flows from the power supply conductor 5 to the protection conductor 3 via the resistances RW1, RW2, RW3 formed by water channels and the individual protection electrodes 1a to 1c of the protection electrode 1.
【００１４】保護導線に欠陥がなければ、保護電極１は
保護導線の電位にある。保護導線３を流れる総漏洩電流
ΣＩΔ＝ＩΔ1 ＋ＩΔ2 ＋ＩΔ3 は漏電保護スイッチ２
の所定電流である１０ｍＡよりも多い場合、総電流変成
器２ａ及び判定電子回路２ｂにより取得され、遮断スイ
ッチ２ｃにより電源電流を遮断し、電源導線４，５を遮
断する。このようにして、漏電は発生することはなく、
操作者に流れることがなくなる。If the protective conductor is not defective, the protective electrode 1 is at the potential of the protective conductor. The total leakage current ΣIΔ flowing protective conductor 3 = IΔ 1 + IΔ 2 + IΔ 3 is leakage protection switch 2
When the current is larger than 10 mA, which is the predetermined current, the power supply current is obtained by the total current transformer 2a and the determination electronic circuit 2b, the power supply current is cut off by the cutoff switch 2c, and the power supply wires 4 and 5 are cut off. In this way, no electrical leakage occurs,
It does not flow to the operator.
【００１５】保護導線に欠陥があれば、総漏洩電流ΣＩ
Δは操作者を経てアースに流れる。しかし、この場合、
遮断による制限が加わって総漏洩電流ΣＩΔは１０ｍＡ
よりも小さく、２００ミリ秒の間で発生する遮断に要す
る所定電流を超過した分のこの少ない漏電が流れる。If the protective conductor is defective, the total leakage current ΔI
Δ flows to ground via the operator. But in this case,
The total leakage current ΣIΔ is 10mA due to the restriction due to interruption.
This small leakage current, which is smaller than the predetermined current required for interruption occurring in 200 milliseconds, flows.
【００１６】漏洩電流を測定するため、図示の実施例で
は総電流変成器を利用する。総電流変成器はコイルを巻
き付けたリング状のコアにより構成し、このリング状コ
アに電源導線線即ち、導入導線及び帰還導線４，５を挿
通する。双方の導線４，５に同量の電流が流れている場
合（漏洩電流が発生していない場合）、リング状コアの
周りのコイルに電流が誘導されず、双方の導線に流れる
電流が大きく異なるとコイルに誘導された電流によって
漏洩電流が発生していることを意味し、またこの漏洩電
流の量も認識することができる。判定電子回路２ｂはコ
イルに誘導された電流を取得し、遮断スイッチ２ｃを制
御し、１０ｍＡ以上の漏洩電流が存在した場合に電源導
線４，５を遮断する。To measure the leakage current, the illustrated embodiment utilizes a total current transformer. The total current transformer is constituted by a ring-shaped core around which a coil is wound, and a power supply wire, that is, an introduction wire and return wires 4 and 5 are inserted through the ring-shaped core. When the same amount of current flows in both conductors 4 and 5 (when no leakage current occurs), no current is induced in the coil around the ring-shaped core, and the currents flowing in both conductors differ greatly. Means that a leakage current is generated by the current induced in the coil, and the amount of the leakage current can be recognized. The determination electronic circuit 2b acquires the current induced in the coil, controls the cutoff switch 2c, and cuts off the power supply wires 4 and 5 when a leakage current of 10 mA or more exists.
【００１７】電子回路なしに動作する総電流変成器付き
の漏電保護スイッチも実施可能である。A leakage protection switch with a total current transformer that operates without electronic circuitry is also feasible.
【００１８】漏電保護スイッチ２の素子は、図２に線図
的に示したのとは別に装置のハウジング６の内部に設け
ることもできる。The elements of the leakage protection switch 2 can also be provided inside the housing 6 of the device, apart from the diagrammatic representation in FIG.
【図１】頭上の構造に孔を穿孔するのに使用した操作者
の手も示した手持ち穿孔装置の線図的説明図である。FIG. 1 is a diagrammatic illustration of a hand-held drilling device also showing the hand of an operator used to drill holes in an overhead structure.
【図２】３個の個別の保護電極よりなる保護電極と漏洩
電流の流れの状態を示す穿孔装置の線図的説明図であ
る。FIG. 2 is a diagrammatic illustration of a perforation device showing the state of the flow of leakage current and a protection electrode composed of three individual protection electrodes.
１ 保護電極 1a,1b,1c 個別保護電極 ２ 漏電保護スイッチ 2a 総電流変成器 2b 判定電子回路 2c 遮断スイッチ ３ 保護導線 4,5 電源導線 RW1,RW2,RW3 抵抗 ６ 装置ハウジング ７ 洗浄ヘッド ８ 貯水装置 DESCRIPTION OF SYMBOLS 1 Protective electrode 1a, 1b, 1c Individual protective electrode 2 Leakage protection switch 2a Total current transformer 2b Judgment electronic circuit 2c Cutoff switch 3 Protective conductor 4,5 Power supply conductor RW1, RW2, RW3 Resistance 6 Equipment housing 7 Washing head 8 Water storage device
Claims (15)
極（１；１ａ，１ｂ，１ｃ）を有する手持ち工具におい
て、漏電保護スイッチ（２）が所定漏洩電流（ΣＩΔ）
で動作して手持ち工具の電源導線（４，５）を遮断し、
保護導線（３）が遮断されないようにしたことを特徴と
する手持ち工具装置。In a hand-held tool having a protection electrode (1; 1a, 1b, 1c) disposed inside a device housing, a leakage protection switch (2) is provided with a predetermined leakage current (ΣIΔ).
To cut off the power wires (4, 5) of the hand tool,
A hand-held tool device wherein the protective conductor (3) is not interrupted.
ＩΔ）が最大１０ｍＡになるとき動作するようにした請
求項１記載の手持ち工具装置。2. The leakage protection switch (2) is connected to a leakage current (Σ
The hand-held tool device according to claim 1, wherein the hand-held tool device is operated when IΔ) is at most 10 mA.
ースに接続した請求項１又は２記載の手持ち工具装置。3. The hand-held tool device according to claim 1, wherein the protection electrode is connected to a ground.
れる電流に基づいて漏洩電流を決定するものとした請求
項３記載の手持ち工具装置。4. The hand-held power tool device according to claim 3, wherein the leakage protection switch determines the leakage current based on a current flowing to the ground.
置の電源導線（４，５）における電流差を検出する総電
流変成器（２ａ）に基づいて漏洩電流を決定するものと
した請求項１乃至４のうちのいずれか一項に記載の手持
ち工具装置。5. The leakage protection switch (2) determines the leakage current based on a total current transformer (2a) that detects a current difference in a power supply lead (4, 5) of the hand-held power tool device. The hand-held tool device according to any one of claims 4 to 4.
リップに配置し、グリップを開くか、又はグリップキャ
ップを外すことによっても元々の位置に存在するよう構
成した請求項１乃至５のうちのいずれか一項に記載の手
持ち工具装置。6. The method according to claim 1, wherein the protective electrode is disposed at the original position by disposing the protective electrode on the grip and opening the grip or removing the grip cap. A hand-held tool device according to any one of the preceding claims.
岐させ、この分岐によって保護電極（１；１ａ，１ｂ，
１ｃ）を保持するようにした請求項１乃至６のうちのい
ずれか一項に記載の手持ち工具装置。7. A protection electrode (1; 1a, 1b, 1c) is branched, and the protection electrode (1; 1a, 1b, 1
The hand-held tool device according to any one of claims 1 to 6, wherein 1c) is held.
数の部分により構成した請求項１乃至７のうちのいずれ
か一項に記載の手持ち工具装置。8. The hand-held tool device according to claim 1, wherein the protective electrode (1; 1a, 1b, 1c) is constituted by a large number of parts.
好ましくは手持ち工具装置の作業姿勢で湿気が容易に溜
まりやすい深い位置に配置した請求項１乃至８のうちの
いずれか一項に記載の手持ち工具装置。9. The protection electrode (1; 1a, 1b, 1c)
The hand-held tool device according to any one of claims 1 to 8, wherein the hand-held tool device is preferably arranged at a deep position where moisture easily accumulates in a working posture of the hand-held tool device.
を、装置ハウジングの開口（Ａ，Ｂ，Ｃ）の領域に配置
した請求項１乃至９のうちのいずれか一項に記載の手持
ち工具装置。10. A protection electrode (1; 1a, 1b, 1c).
10. The hand-held tool device according to claim 1, wherein the device is arranged in the region of the opening (A, B, C) of the device housing.
を、導電性媒体が溜まる装置ハウジングの内部の位置に
配置した請求項１乃至１０のうちのいずれか一項に記載
の手持ち工具装置。11. Protection electrode (1; 1a, 1b, 1c)
The hand-held tool device according to any one of claims 1 to 10, wherein the device is disposed at a position inside the device housing in which the conductive medium is stored.
を、手持ち工具装置のすべての作業位置で動作するよう
にした請求項１乃至１１のうちのいずれか一項に記載の
手持ち工具装置。12. A protection electrode (1; 1a, 1b, 1c).
The hand-held tool device according to any one of claims 1 to 11, wherein the hand-held tool device is operated in all working positions of the hand-held tool device.
に、溝、リブ又はバリヤのうちの少なくとも一つを設け
た請求項１乃至１２のうちのいずれか一項に記載の手持
ち工具装置。13. A protection electrode (1; 1a, 1b, 1c).
The hand-held tool device according to any one of claims 1 to 12, further comprising at least one of a groove, a rib, and a barrier.
側面を最大の大きさとした請求項１乃至１３のうちのい
ずれか一項に記載の手持ち工具装置。14. The hand-held tool device according to claim 1, wherein a side surface of the protection electrode (1; 1a, 1b, 1c) has a maximum size.
耐食性材料により構成した請求項１乃至１４のうちのい
ずれか一項に記載の手持ち工具装置。15. The hand-held tool device according to claim 1, wherein the protection electrode (1; 1a, 1b, 1c) is made of a corrosion-resistant material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19717164:8 | 1997-04-23 | ||
| DE19717164A DE19717164A1 (en) | 1997-04-23 | 1997-04-23 | Hand-held machine tool with protective device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10315158A true JPH10315158A (en) | 1998-12-02 |
| JP4294755B2 JP4294755B2 (en) | 2009-07-15 |
Family
ID=7827508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11161198A Expired - Fee Related JP4294755B2 (en) | 1997-04-23 | 1998-04-22 | Hand-held tool device |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6055142A (en) |
| EP (1) | EP0874436B1 (en) |
| JP (1) | JP4294755B2 (en) |
| DE (2) | DE19717164A1 (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6388408B1 (en) * | 2000-12-18 | 2002-05-14 | Defond Manufacturing Limited | Motor current sensing in electric power tools |
| US7395871B2 (en) * | 2003-04-24 | 2008-07-08 | Black & Decker Inc. | Method for detecting a bit jam condition using a freely rotatable inertial mass |
| US7552781B2 (en) | 2004-10-20 | 2009-06-30 | Black & Decker Inc. | Power tool anti-kickback system with rotational rate sensor |
| US8316958B2 (en) * | 2006-07-13 | 2012-11-27 | Black & Decker Inc. | Control scheme for detecting and preventing torque conditions in a power tool |
| US9266178B2 (en) | 2010-01-07 | 2016-02-23 | Black & Decker Inc. | Power tool having rotary input control |
| US9475180B2 (en) | 2010-01-07 | 2016-10-25 | Black & Decker Inc. | Power tool having rotary input control |
| US8418778B2 (en) | 2010-01-07 | 2013-04-16 | Black & Decker Inc. | Power screwdriver having rotary input control |
| GB2490447A (en) | 2010-01-07 | 2012-10-31 | Black & Decker Inc | Power screwdriver having rotary input control |
| DE102011087117B4 (en) * | 2011-11-25 | 2023-07-20 | Hilti Aktiengesellschaft | Electric drive for a hand tool |
| EP2631035B1 (en) | 2012-02-24 | 2019-10-16 | Black & Decker Inc. | Power tool |
| DE102012222055A1 (en) * | 2012-12-03 | 2014-06-05 | Hilti Aktiengesellschaft | Measuring arrangement for measuring an effective value of an alternating voltage in a handheld power tool |
| DE102016106558A1 (en) * | 2016-04-11 | 2017-10-12 | Festool Gmbh | Hand machine tool with a circuit breaker |
| US10589413B2 (en) | 2016-06-20 | 2020-03-17 | Black & Decker Inc. | Power tool with anti-kickback control system |
| SE542648C2 (en) * | 2016-10-13 | 2020-06-23 | Husqvarna Ab | Integrated residual current device for handheld wet tools |
| DE202021002576U1 (en) | 2021-07-31 | 2021-08-24 | Jörg Harz | Missing protective conductor |
| DE102021004012A1 (en) | 2021-07-31 | 2023-02-02 | Jörg Harz | missing protective conductor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE950658C (en) | 1953-07-26 | 1956-10-11 | Bosch Gmbh Robert | Portable electrical machine, in particular electrical hand machine tool, the motor of which is separated from the metal parts of the housing by insulating material construction parts |
| DE1105977B (en) | 1959-11-18 | 1961-05-04 | Bosch Gmbh Robert | Additional protective measure against contact voltage on an electric motor-driven hand tool with protective insulation |
| US3761774A (en) * | 1970-03-20 | 1973-09-25 | Black & Decker Mfg Co | Ground fault protective apparatus |
| CH596833A5 (en) * | 1975-09-25 | 1978-03-31 | Creativ Patentanstalt | |
| JPS60106404A (en) * | 1983-11-15 | 1985-06-11 | 松下電工株式会社 | Hair curler |
| WO1989001718A1 (en) * | 1987-08-14 | 1989-02-23 | Weber Ag, Fabrik Elektrotechnischer Artikel Und Ap | Protective switching device for electrical appliances |
-
1997
- 1997-04-23 DE DE19717164A patent/DE19717164A1/en not_active Withdrawn
-
1998
- 1998-04-09 EP EP98810312A patent/EP0874436B1/en not_active Expired - Lifetime
- 1998-04-09 DE DE59814472T patent/DE59814472D1/en not_active Expired - Lifetime
- 1998-04-22 JP JP11161198A patent/JP4294755B2/en not_active Expired - Fee Related
- 1998-04-23 US US09/065,355 patent/US6055142A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE19717164A1 (en) | 1998-10-29 |
| JP4294755B2 (en) | 2009-07-15 |
| EP0874436A3 (en) | 1999-12-29 |
| EP0874436B1 (en) | 2010-10-27 |
| DE59814472D1 (en) | 2010-12-09 |
| US6055142A (en) | 2000-04-25 |
| EP0874436A2 (en) | 1998-10-28 |
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